<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        select,
        option {
            width: 200px;
            height: 50px;
            background-color: #f00;
            border: 1px solid #f00;
        }


        input {
            width: 30px;
            height: 30px;
            /* 其他样式无法修改 */
        }
    </style>
</head>

<body>
    <!-- option的样式无法修改 -->
    <select name="" id="">
        <option value="">1</option>
        <option value="">1</option>
        <option value="">1</option>
        <option value="">1</option>
        <option value="">1</option>
    </select>


    <input type="radio">

    <input type="checkbox">

    

</body>

</html>